<template>
  <view class="cart-container">
    <view v-if="total !== 0">
      <my-address></my-address>
      <!-- 商品列表标题区域 -->
      <view class="cart-title">
        <!-- 左侧的图标 -->
        <uni-icons type="shop" size="18"></uni-icons>
        <!-- 右侧的文本 -->
        <text class="cart-title-text">购物车---{{total}}</text>
      </view>
      <!-- 渲染购物车中的商品 -->
      <uni-swipe-action>
        <view class="cart-list" v-for="(item,index) in cart" :key="index">
          <uni-swipe-action-item :right-options="options" @click="deleteHandler(item)" :auto-close="false">
            <my-goods :item='item' :show-radio='true' @radio-change="radioChangeHandler" :number-box="true"
              @num-change="numberChangeHandler"></my-goods>
          </uni-swipe-action-item>
        </view>
      </uni-swipe-action>

      <my-settle></my-settle>
    </view>
    <view class="empty-cart" v-else>
      <image src="/static/11.png" class="empty-img"></image>
      <text class="tip-text">空空如也~</text>
    </view>
  </view>

</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  // 按需导入 mapState 这个辅助函数
  import {
    mapState,
    mapMutations
  } from 'vuex'
  export default {
    mixins: [badgeMix],
    computed: {
      ...mapState('m_cart', ['cart'])
    },
    data() {
      return {
        options: [{
          text: '删除',
          style: {
            backgroundColor: '#ff0000'
          }
        }]
      };
    },
    methods: {
      ...mapMutations('m_cart', ['updateGoodsState', 'updateGoodsCount', 'deleteGoods']),
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        // console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
        this.updateGoodsState(e)
      },
      numberChangeHandler(e) {
        // 这个e就是我们传过来的对象
        this.updateGoodsCount(e)
      },
      deleteHandler(item) {
        this.deleteGoods(item)
      }
      // deleteHandler(item) {
      //   console.log(item);
      //   this.deleteGoods(item)
      // },
    }
  }
</script>

<style lang="scss">
  .cart-container {
    padding-bottom: 50px;
  }

  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;

    .empty-img {
      width: 90px;
      height: 90px;
    }

    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }

  .cart-title {
    height: 40px;
    display: flex;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;
    // background-color: aqua;
    border-bottom: 2px solid #dedede;

    .cart-title-text {
      // background-color: antiquewhite;
      margin-left: 5px;

    }
  }
</style>
